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Finding the Fourth Proportional to 6,752.80, 9,315.12 and 3,957.76

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Solution

The fourth proportional to 6,752.80, 9,315.12 and 3,957.76 is: 5,459.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,752.80 : 9,315.12 = 3,957.76 : x
  2. Step 2: Convert to fraction form
    6,752.80/9,315.12 = 3,957.76/x
  3. Step 3: Cross multiply
    6,752.80x = 9,315.12 × 3,957.76
  4. Step 4: Simplify right side
    6,752.80x = 36,867,009.33
  5. Step 5: Solve for x
    x = 36,867,009.33/6,752.80
  6. Step 6: Final answer
    x = 5,459.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.